PRELIMINARY DATA SHEET
TPU 3035, TPU 3040, TPU 3050
4
Micronas
Multistandard Teletext Processor for Level 1 and 2
Release Note:
This data sheet describes functions and characteristics of TPU3040–A25 and TPU3050–C4.
If not otherwise designated, the pin numbers mentioned refer to the 44-pin PLCC package. For corresponding
PDIP and PSDIP numbers, see page 11. Revision bars indicate significant changes to the previous version.
1. Introduction
The TPU 3040 is a single chip World System Teletext
(WST) decoder for applications in analog and digital TV
sets. Based on a 65C02 core with RAM and ROM on
chip, an adaptive data slicer, a display controller, and a
number of interfaces, the TPU 3040 offers acquisition
and display of various teletext and data services such as
WST, PDC, VPS, and WSS.
1.1. Features
The TPU 3040 is an integrated circuit designed in CMOS
technology. As a stand-alone system or in combination
with the DIGIT 3000 system, the TPU 3040 offers a wide
range of new and interesting features, some of them
unique in comparison with other products on the market.
The TPU 3035 is a stripped-down version of TPU 3040,
designed for low-cost applications. The basic chip archi-
tecture remains unchanged, whereas some of the more
sophisticated features are removed.
The TPU 3050 offers all features of the TPU 3040 plus
the possibility of connecting the SRAM instead of the
DRAM memory.
This data sheet describes the full feature set of the
TPU 3040. Differences between TPU 3035, TPU 3040,
and TPU 3050 are denoted when necessary (see Table
1–1).
Table 1–1: Feature List
TPU
3035
3040
3050
Acquisition
No. of analog comp. video
inputs
1
2
Clamping
x
AGC
x
Sync. separation with PLL
x
Adaptive data slicer
x
Signal quality detection
x
PAL VBI acquisition
x
NTSC VBI acquisition
–
MAC VBI acquisition
(PLCC44 only)
–
x
–
MAC packet text acquisition
(PLCC44 only)
–
Full-field acquisition
–
Asynchronous acquisition and
display
x
Ghost row acquisition
x
EPG support
–
x
Internal row 26 processing
(extended character sets)
–
x
FLOF/TOP s/w support on chip
x
PDC acquisition
x
VPS acquisition
x
WSS acquisition
–
x
US captioning
–
x
Software acquisition (ad-
vanced header, magazine
shuffle, ...)
x
Full parallel acquisition
x